DCMT光电测微器的数据采集系统  

Data Acquisition System for the Photoelectric Scanning Micrometer on the Danish-Chinese Meridian Telescope

作　　者：许林生[1] 李志刚[1] 

机构地区：[1]中国科学院院西天文台

出　　处：《陕西天文台台刊》1995年第6期80-86,共7页Publications of The Shaanxi Astronomical Observatiory

摘　　要：光电测微器是中－丹水平子午环最关键的部分．本文介绍了数据采集系统的设计思想．根据长期对仪器的测试和观测结果分析，表明系统完全达到设计要求，同时为下一步改装成ＣＣＤ终端，观测极限星等达１７ｍ．５提供了可行的方案．The photoelectric scanning micrometer is a very important part on the Danish-Chinese Telescope at Shaanxi Astronomical Observatory. The design is very peculiar. It can observe the stars close to pole and the artificial stars without moving. This kind of micrometer is used on astrometric instrument for the first time in our country. According to the requirement of the design,the fainter stars could be observed with the photon counting technologies. In this paper,the hardware and the software for the data acquisition and reduction are discussed respectively. The repeatability of the micrometer is about 0'.026 for observing the artificial star.

关 键 词：光子计数 光电测微器 水平子午环 数据采集系统 

分 类 号：P124[天文地球—天体测量]